I am developing an app which requires to use the Google Play Services API because it is an online multiplayer game and Google Play Services suits me good in about I want to do.
As I read here: https://developers.google.com/games/services/android/quickstart it requires me to generate an OAuth 2.0 client ID for my app in order to connect to the API properly and employ its services and in order to get the OAuth 2.0 client ID I need to create an account in Google Play Developer Console which requires me to pay a fee of 25$.
Since I am not completely sure about and costs me money to test it I ask if I am sure and I need to pay the fee or I am wrong about.